The ground beneath
your property
has a story.
Before a trench is cut or a permit filed, we read it — soil profile by soil profile, setback by setback. Here's what the data says about where you live.
Homes on private septic systems
across our 6-county service area
Source: County Health Dept. Census, 2024
Average soil absorption rate
inches per hour — clay-heavy zones
Perc test median, Zone B soils
Failing systems flagged
in the last inspection cycle
Flagged for mandatory upgrade, FY2025
"Most homeowners learn how their septic system works the day it fails. We'd rather you learn it now — before escrow closes, before the inspection, before the ground freezes."
— Dale Hutchins, Lead Installer · 22 years
The people holding
the shovel.
Every crew member carries a specialty. Every specialty anchors a section of this page that teaches you something real about the work.

Conventional gravity systems & trench excavation
Dale Hutchins
Lead Installer · 22 yrs
"Clay tells you everything. The color, the texture, how it breaks — you learn to read it the way you read a map."
How Conventional Gravity Systems Work
A conventional gravity system moves wastewater from your home through a septic tank — where solids settle and liquids partially treat — then out through a distribution box into a drain field. Gravity does the work. No pumps, no pressure, no moving parts. The soil finishes the job, filtering effluent before it reaches groundwater. The catch: your lot needs the right slope, the right soil depth, and a percolation rate that gives the ground time to absorb what the tank releases.
Gravity systems are the most reliable option when soil and slope conditions allow — fewer components means fewer failure points.

Engineered mound & pressure-dosed systems
Renata Sobczak
Systems Engineer · 14 yrs
"An impossible lot is just a lot that hasn't been designed for yet. Mound systems exist because the soil said no and we said — let's build above it."
What a Perc Test Actually Measures
A percolation test (perc test) measures how quickly water drains through your soil — expressed in minutes per inch. Inspectors dig test holes, saturate the soil, then time how long it takes for water to drop one inch. Fast absorption (under 30 min/in) means your soil can handle a standard drain field. Slow absorption (over 60 min/in) means the soil is too dense — typically clay — and a mound or pressure-dosed system is required to spread effluent over a larger engineered area. The number on that test determines your entire system design.
A failed perc test doesn't kill a real estate deal — it changes the system type. Engineered alternatives exist for nearly every soil condition.

Pump systems, risers & system maintenance
Marcus Osei
Field Technician · 9 yrs
"Most people never see their system until something goes wrong. We install access risers so you can check on it every year without digging up your yard."
Why Setback Distances Matter
Setback rules dictate how far your septic components must sit from property lines, wells, streams, wetlands, and structures. A typical county requires: 100 ft from any drinking water well, 50 ft from streams or bodies of water, 10–25 ft from property lines, and 10 ft minimum from the foundation. These aren't arbitrary — they protect groundwater and neighboring properties. On small or oddly shaped lots, setbacks can eliminate otherwise viable drain field locations, which is why a site evaluation before you close on land can save tens of thousands of dollars in redesign costs.
On rural acreage, the well and septic relationship is the most critical siting decision on the property. Get it wrong once and it follows the deed.
Three systems.
One right answer for your lot.
The difference between a $9,000 gravity install and a $28,000 mound system comes down to a single number from your perc test.
Conventional Gravity
Wastewater flows by gravity from the home through the septic tank, then to a distribution box, and finally into perforated pipes buried in gravel trenches. Soil microbes treat the effluent as it percolates downward. No electricity required. The simplest, most durable system when conditions allow.
Standard lots with well-draining loam or sandy soils and adequate slope
Site grading assessment
Perc test confirms soil rate
Tank + D-box installation
Trench excavation
Gravel bed + perforated pipe
Cover and seed
The Homeowner's
Septic Guide
Personalized to your county's soil conditions and regulatory requirements. Enter your zip code and we'll match the guide to your specific zone.
Perc test process & what your number means
Setback distances by county zone
Gravity vs. mound vs. pressure-dosed comparison
Signs your current system is failing
Septic inspection checklist for real estate buyers
County permit process & typical timelines
Maintenance schedule for new installations
"We wrote this guide because the county permit office is not going to explain what a failing system looks like before you close on that property."
— Renata Sobczak, Systems Engineer
Download Your Guide
One email. One zip code. Personalized to your county.
Check your
property.
Share your parcel number and what you're seeing. One of our crew will review your lot conditions and call you back — no sales pitch, just an honest read from someone who's worked this soil.
We pull your parcel data and county soil maps
Dale or Renata reviews your lot conditions
You get a straight answer — system type, rough cost range, next steps
SepticCrew holds state contractor licenses in all 6 counties we serve. Every system is permitted and inspected before backfill.